Home-school communication refers to the installation of rfid cards on students. When students leave school and enter school, parents can immediately know the child’s location. So that the school becomes an intelligent management school, the “digital campus intelligent information management system” uses computers, the Internet of things, rfid radio frequency identification and wireless communication technology to create four major digitalizations of campus security, campus payment, home-school communication, and information collection. Campus experts provide real-time feedback on student attendance, study, exams, homework, physical examination information, consumption and other daily situations, so as to realize the educational information interaction platform for convenient, fast, and real-time communication between school parents. China Telecom, China Mobile, and China Unicom, the three major operators of China Communications, can simultaneously support operations. Users of the three major operators can simultaneously enjoy the best digital campus home-school interactive services.
The rfid card is also known as a radio frequency card. The working basis of the rfid card is radio frequency identification technology. Radio frequency identification technology is a use of radio frequency signals through spatial coupling (alternating magnetic field or electromagnetic field) to achieve contactless information transmission and achieve identification purposes through the transmitted information Technology. Radio signals can be used to identify specific targets and read and write related data, without the need to establish mechanical or optical contact between the recognition system and specific targets. Commonly used are low frequency (125k~134.2k), high frequency (13.56mhz), ultra high frequency, passive and other technologies. Rfid readers are also divided into mobile and fixed. At present, rfid technology is widely used, such as: libraries, access control systems, food safety traceability and so on.
It is a high-frequency rfid card that is suitable for making home-school communication. The frequency band of high-frequency rfid is 13.56mhz, which is divided into two kinds, one of which is the short-range 14443 protocol. The reading distance of this technology is about 10cm. In the use of “Home-School Link”, students usually use the wall-mounted attendance machine to swipe their cards actively, and some use barrier-free channels. Of course, if you use the wall-mounted machine, you cannot make an alarm for people without a card. Therefore, in the application of short-distance high-frequency rfid, there are also merchants using channels. Due to the need for people to stay and actively swipe the card, the technical passing speed of short-distance high-frequency rfid is slower than that of low-frequency rfid. However, the security of short-distance high-frequency rfid is better, so it is more used in colleges or enterprise parks when it involves catering and bathing consumption. In the card information miss rate, it is basically the smallest among all technologies.
Technical parameters of home-school rfid card:
Home-school rfid card storage capacity: 4kbit, 16 partitions, two sets of passwords for each partition
Reading distance of home-school rfid card: 2.5~10cm
Home-school rfid card read and write time: 1~2ms
Working temperature of home-school rfid card: -20℃~55℃
Home-school rfid card erase and write life: >100,000 times
Home-school rfid card data storage: >10 years
Home-school rfid card material: pvc
Home-school rfid card size: any shape
Home-school rfid card frequency: 125khz, 13.56mhz, 915mhz
Home-school rfid card packaging: 100-200pcs/box
Home-school rfid card application:
Application industries of radio frequency identification technology such as primary and secondary schools, colleges, and catering industries
Introduction
United Smart Card is a smart card manufacturer that integrates various smart card production, sales, technology and services. It is located in the Pearl River Delta region where the sea, land and air are convenient, the environment is beautiful, and the human resources are abundant. The main products of United Smart Card are cpu cards, ic cards, id cards, glue cards, drawing cards, laser cards, special-shaped cards, visual cards, electronic tags and other various smart cards. The sales philosophy of United Smart Card is “one center, three services”, which are customer-centric; serving the society, serving customers, and serving products.
